A. Is upper motor neurone type
B. is asymmetrical
C. Usually affects the lower limbs more severely than the upper limbs
D. Is more severe if strenuous physical exercise occurred in the incubation period
E. May be caused by polio vaccination
Ans. B, C, D, E
Poliomyelitis is caused by three types
of polio virus.
Type 1 polio virus is the most virulent
and prior to immunization was responsible for major epidemics.
Polio virus is an enterovirus and is
spread by the feacal oral route. Other factors associated with paralysis are:
pregnancy, tonsillectomy and prophylactic injections.
The incubation period is 3-21 days
(usually 7-14 days). [MCQ]
